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通过大田试验研究了集雨限灌对同薯23号和大西洋两个马铃薯品种的补灌效应.结果表明:集蓄雨水在苗期补灌能显著提高旱作马铃薯的产量,且大西洋增产幅度高于同薯23号;在薯块膨大期补灌同薯23号的产量增加不显著,而大西洋减产.低额补灌(补灌45mm)有利于同薯23号水分利用效率(WUE)和灌水利用效率(IWUE)的提高.大西洋苗期补灌的WUE和IWUE均高于薯块膨大期.补灌提高了同薯23号的大薯率、中薯率和单株薯产量,降低了小薯率,但绿薯率、烂薯率有所增加;大西洋的大薯率和小薯率增加,中薯率稍有下降,烂薯率增加.
The field experiment was conducted to study the effects of rainwater harvesting on paddy yield of two potato cultivars, the same potato number 23 and the Atlantic. The results showed that paddy irrigation at the seedling stage could significantly increase the yield of dry-land potato and increase the yield of the Atlantic At the same potato number 23, the increase of potato yield was not significant with that of potato variety No.23 while that of the Atlantic reduced production.The low amount of supplementary irrigation (supplementing 45 mm) was beneficial to the water use efficiency (WUE) and irrigation Utilization efficiency (IWUE) increased.The WUE and IWUE of Atlantic irrigation were higher than that of potato enlargement.The supplementary irrigation increased the potato yield, potato yield and single potato yield, However, the rate of green potato and the rate of rotten potato increased slightly. The rate of large potato and the rate of small potato in the Atlantic increased slightly, while that of potato decreased slightly while that of potato decreased.